n | a(n) |
---|---|
7 | 2 |
8 | 5 |
9 | 21 |
10 | 61 |
11 | 214 |
12 | 669 |
13 | 2240 |
14 | 7330 |
15 | 24695 |
16 | 83257 |
17 | 284928 |
18 | 981079 |
19 | 3410990 |
20 | 11937328 |
21 | 42075242 |
22 | 149171958 |
23 | 531866972 |
24 | 1905842605 |
25 | 6861162880 |
26 | 24805692978 |
27 | 90035940227 |
28 | 327987890608 |
29 | 1198853954688 |
30 | 4395797189206 |
31 | 16165195705544 |
32 | 59609156824273 |
33 | 220373268471398 |
34 | 816677398144221 |
[2,5,21,61,214,669,2240,7330,24695,83257,284928, 981079,3410990,11937328,42075242,149171958, 531866972,1905842605,6861162880,24805692978, 90035940227,327987890608,1198853954688, 4395797189206,16165195705544,59609156824273, 220373268471398,816677398144221] |